Steam-generating boiler



F. J. VAUX.

STEAM GENERATING BOILER.

APPLICATION FILED AuG.2s,191s.

1,402,388 Patented Jan. 3,1922.

3 SHEETS-SHEET 1.

mi """vu 4 afzzeoy -F. J. VAUX.

STEAM GENERATING BOILER.

APPLICATION FILED AUG.25. 1919.

Patented JanQS, 1922.

a SHEETS-SHEET 2.

F. J. VAUX.

STEAM GENERATING BOILER.

vAPPLICATION FILED AuG.25, m19.

Patented Jan. 3,1922.

3 SHEETS-SHEET 3- des e .er ia.

'-rnnnnnrox JOHN veux, or LANCASTER, rnNNsYLvnNrs., Assiettes 'ro :neutron Br-Loor RADIATOR COMPANY, on LANCASTER, PENNSYLVANIA. Y

STEAl-GENERATING vBOIILEIE.

Lacasse.

Application filed. August 25, 1919.

lowing is a specification.

This invention Vrelates to steam generating boilers for use in connection with systems of heating houses or other buildings and has for its object the vprovision of a water heating boiler to produce and maintain steam by the use of a less quantity of'fuel, and therefore more economically, and also a boiler requiring a small amount of attention to hold the steam pressure. To this end, the present invention comprises several new principles of construction. Among these attention may be called to the formation and arrangement of `the Ushaped tubes, here@ after to be referred to as U-tubes, the econ-` oiny of construction byhaving the water compartment extend the full length of the furnace from pit to dome and thereby constitute the fire boX and walls as well as the heat compartment of the boiler, andthe y ing absorbed from these gasesby direct im;

pingement against the tubes as well as by 'the circulation around the tubes. Also, the construction is such that it offers no resistance to expansion or contraction as is the case in other types of boilers, and the continual circulation of the water causes an even temperature over all parts of the boiler thus the liability of this type of boiler cracking or exploding when placed under heavy strains is reduced to a minimum, if not wholly eliminated. y

An embodiment of the present invention Specification of Letters Patent.

Patented Jani. 3, 1922.

serial No. 319,552. i

'is disclosed in the accompanying drawings,

wherein Y Figure l, is a vertical section on the line y-jz/ in Fig. 3. Fig. 2, is a detailed cross l lsection of the flue check. Fig. 3, is a cross section on the line `m of Fig. l, looking toward the `dome .of the boiler.V Fig. 3A is a plan view and Fig. 4, is a cross section on the line a-e of the battle plate used in the top of the boiler. Fig. 5, is a cross section on the line -m of Fig. 1, looking toward the pit of the boiler.

The boiler is .constructed with a heavy base A, preferably of cast iron which is suficiently tall to insure a proper draft under the fire, and to give ample room for an ash pit. The base A, has mounted thereon a hingeddoor a, for the control of the draft and also for the removal of the ashes, in a well known manner. Mounted in this base A, is the grate, consisting of the grate bars B, V(Figs. l and 5) having the intermeshing projections b. As will be seen from Fig. 5, this bed of intermeshing projections consti tutes an almost solid bed for the fire. Each grate bar has a reduced end o, mounted to turn in a socket d, in the pit or base A, an extension e, which freely turns in correspondingopenings in the pit A, not shown, but of usual construction. The extensions e, are designed to be turned by the handle f, so that upon each pull of this handle` the slag and clinkers will be crushed and loosenedr so that the grate is effectively and read ily cleared. The upper lrim or periphery of the pit A, has a groove A into which fits the annular ring C. Upon this base A, isfit a double walled waterl shell D. Theinner and outer walls have awater tight [it over the annular ring C, and are bolted to this ring as shown at E, in Fig. l. This water shellV is constructed of what is known as ianged, fire-box steel, and it extends the full length of the boiler from the pit A, to

the dome F. The dome F, also has secured thereto an annular ring G, to which the shell is bolted as at H (Fig. 1).v

The one side of the shell D, which will beY called the face of the boiler, has a hinged door I, through which fuel is supplied to the boiler, and also there are the usual draft regulating slides g. The opening in the water shell for the frame of the door I, is

appropriately closed, as shown at J, in Fig. l. Nie-iter is introduced into the lower part of the shell D, opposite the fire-box through tlreipineK (Figs. l and 5). The inner wall of, the sheli D, hassuspended therefrom a series ot 1Ll-shaped tubes L and M, Figs. l, 3 and 5, the ends oi' which have water tight connection with the inner wall of the shell D, as shown at 71 and t', resnectively. lt will be noted that tubes L, are longer than tubes M, and that they are alternately arranged on the Yinterior of the boiler, except over the door T,

whereall oi? the 'tubes must necessarily be short. lThese tubes radiate inwardly toward the center ot' the boiler, the longer tubes l), extending further into the interior oi' the boiler thanthe shorter tubes M. The outer wall of the shell D, is equipped with plugs (j, Figs. l, 3 and 5, whichfplugs areropposite each of the open'ends oi each of the tl-tubes L and M. The purpose'ot these plugs is to facilitate easy removal and re aair et the tubes should there be any aceidentto any one of the tubes.

As will be apparent from Fig. l, the lower part of the water shell D. constitutes the tire box or' this boiler-furnace, and that the heat gases must,.in escaping to the lue, first strikethe lower curves ot the U-tubes, pass along these tubes and circulate in between, and again strike the upper curres oit the tubes before passing out of the water shell. tlthe same time, the unheated water which enters near the base ot the shell is heated and rises, as it expands, not only in the water shell l), which surrounds the fire, but also flows in the lower end of the U-tubes L and M, and out through the upper end. in the course ot' this travel the' water is heated to such an extent that it becomes the steam vapor that travels through the supply pipe leading to the radiators throughout the building` which are to be heated. Thus, the 'water flows in the saine direction as the heat gases, namely in a rerticall direction, and as both are following their natural courses.

To further assist in the circulation ol' the heat gases through the tubes L and M, the dome F, of the boiler-furnace is fitted with a battle plate N, best-shown in Fig. el, but shown applied in Figs. l and 3. As will be Aseen from Figl, it consists ofa solid central portion oa smaller diameter than the interior diameter of the furnace, from which extendsV outwardly the prongs 7c, each oi which has a hole Z, through which bolt m, passes to secure the baille plate in position in the'boiler above the U-tubes. The top ofthe dome F, is ventilated to the tine or chimney (not shown) as at C", iii-Fig'. l. Thisopening-iscontrolled by the-check vvali/*e n, pivoted'at a', having a curved ratchet armv 0, cooperating with a slot 0,in thed'ome F, to adjust and regulate the amount of draft. This draft is, like other furnaces, used to regulate the tire when itis desired to accelerate or increase the amount.V ot' heat generated., To further assist in the drawing power oi' this connection. with the flue, the upper part of the dome F, above the check valve 11,', is 'ventilated tothe atmosphere, as shown at P, in Fig. l. This auxiliary openingk P, is closed bythe hinged valve ,i Y

Q, and 'h aslastened to it a ehainr, which ex# tends around withinconvenient reach of the person attending tothe furnace, so that it may be opened and 'closed'entirely at will.

Thus, it will be seen that the heated gases Y passing from ofi' the .tire necessarily pass through the tubes Land M because the only way for them to get to the iue is on the outf side ot thesolid' central portion of the bathe yplate N, between the prongs te.

The steam vapor is supplied to the building to be heated through the pipeQ, and the water of condensation returns'to the boiler in a well known manner, through the pipe R. All of the pipes K, Q, and it, have watertight connect-ions with the outerrwall of the water shell D. It sometimes becomes necessary' to reduce the steam pressure andto this end the outer wall of the water shell D, is provided with a surface blow-oivalve S.

The steam generating boiler furnace herein described, consisting ot' abase having an annular channel in itsupper edge, a grate in said base, a water shell having an annular ring in its lower portion fitting the annular channel orn the base, anv annular ring fitting the upper end of' said shell, a dome mounted on the shell and secured to said ring, Yaconcaved balile plate having a series of perforated ears secured between the dome and ring, theV securing means passing through said dome, earsand` rings,heat regulating means in said doine,'and a series ot U-tubes disposed vertically between the baffle plate and grate and'communicatinp `at each end with said water shellb In testimony whereof I hereunto affix my signature.

rnnnnnici; Jenn vaux. 

